Nike SB HJ020 Lightweight Sport Headphones (Discontinued by Manufacturer) Lightweight, unobtrusive headphones specifically designed for movement Behind-the-head design with rear cable exit improves stability and comfort Soft, sweat-resistant earpieces fit securely within the lobes 15 mm neodymium drivers create 10 Hz to 20 kHz frequency response 3.5 mm stereo chrome connector and 3.9-foot cable